How to get a simple SwiftUI to load as a UITableView would (logically!)

荒凉一梦 提交于 2021-02-11 15:16:03
问题 How can I get SwiftUI to load 8 images horizontally but if the third image happens to go off screen it puts it in a Vstack underneath the 1st image with the same padding... and if three can fit on the screen it does the same to the 4th. I can not find anyway to do this! TableViews were so easy to implement but now SwiftUI makes things much harder iPhone: [1] [2] [3] [4] [5] [6] [7] [8] iPad Pro [1] [2][3] [4] [5] [6] [7] [8] iPad Mini [1] [2][3] [4] [5] [6] [7] [8] 回答1: I have acheived this

LazyVStack scrolling stops animations

[亡魂溺海] 提交于 2021-01-29 07:51:01
问题 This code lists 100 rows with refresh icon animations. When using a LazyVStack instead of a VStack , after scrolling down to the bottom of this list all the animations stop, including those at the top of the list once you scroll back. No such issues with a VStack . Any ideas as to why this is happening and is there a workaround? Using Xcode 12.0.1, iOS 14, Swift 5 struct RefreshingList : View { @State var isAnimating = false var body: some View { ScrollView { LazyVStack { // <- change to

Rolling windows for ndarrays

回眸只為那壹抹淺笑 提交于 2021-01-28 09:00:37
问题 I have a ndimensional array with shape (30,2,2) and 2000 elements. So my final array is of shape (2000, 30, 2, 2). I now want to stack rolling 200 elements in a new array. So I assume my final array will look something like (1801, 200, 30, 2, 2) where each element in 1800 has 200 samples of (30,2,2) arrays. How do you create this rolling window in python. I have tried using vstack but not entirely sure how I achieve my desired results. import numpy as np input = np.zeros((2000, 30, 2, 2))